<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    *{
        margin: 0;
        padding: 0;
    }
    .layout{
        height: 44px;
        background-color: #d92b34;
    }
    nav{
        width: 1004px;
        height: 44px;
        background-color: #c8141f;
        margin: 0 auto;
        display: flex;
    }
    nav div{
        flex: 1;
        text-align: center;
        line-height: 44px;
        color: white;
    }
    nav div:hover{
        background-color: orange;
    }
</style>
<body>
    <!-- 通栏 -->
     <div class="layout">
        <!-- 版心 -->
        <nav>
            <div>导航</div>
            <div>导航</div>
            <div>导航</div>
            <div>导航</div>
            <div>导航</div>
            <div>导航</div>
            <div>导航</div>
            <div>导航</div>
            <div>导航</div>
            <div>导航</div>
            <div>导航</div>
            <div>导航</div>
        </nav>
     </div>
</body>
</html>